public class DataTypeDemo{
	public static void main(String[] args){
		char a = 'a';
		System.out.println(a+1);
		String s = "A";
		System.out.println(a==97);
		char ch = '\t';
		System.out.println('['+ch+']');
		double d = 3.14159;
		int e = (int)d;
		System.out.println(e);
	}
}